ok so the trac off light came on an i believe because the OBD plug (7.5) was removed and then plugged back in..idk wat the problem is..also wen i push on the gas pedal it doesnt rev an much as it used too only when i push it all the way down it starts to rev..please need help.

 

Its your engine light. You need to read the codes and post them here so we can help you. Sounds like ur car is in limp mode.